Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 3,161	$ 3,415	$ 7,603	$ 6,890
Provision for income taxes	$ 527	$ 642	$ 1,331	$ 1,447
Effective tax rate	16.70%	18.80%	17.50%	21.00%